I'm trying to execute/install ubuntu 18.04 on a "HP pavillon power laptop 15-cb0xx", using a USB stick. I get stuck because the keyboard is not working and the mouse click is not recognised (as well as the touchpad click). I'm still able to move the mouse cursor with both the mouse and the touchpad.
I have tried the same USB stick on another computer (a lenovo desktop) and it is working there without any problem.
I have read in the answers to a similar question that ubuntu 18.04 uses a multi-contact interface (i.e. two fingers) to simulate the left and right buttons, but in my case the click is not working at all.
[As a workaround I tried to install Ubuntu 16.04 and then update but after the first software update the boot process didn't work, or it became so slow that after 20 minutes I didn't get to se the desktop.]